Body Composition of Negro and White Children

Ma, Flynn; Y, Murthy; Clark, Jonathan H.; Cumfort, G; Chase, Gerald R.; Ae, Bentley

doi:10.1080/00039896.1970.10665670

Cited by 16 publications

(3 citation statements)

References 8 publications

(1 reference statement)

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“…This probably has physiologic and endocrine significance. Although various investigators have found sex-related differences starting at infancy [15], we have not found them either by 40 K studies [9] or by body water compartments [8] in preschool children.…”

Section: Discussionmentioning

confidence: 60%

Total Body Potassium in Normal Children

et al. 1972

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Normative data for total body potassium on 462 children (232 boys and 230 girls) are presented. The regression of total body potassium on weight can be described as a straight line for males (grams K = 4.32 +2.12 X weight) and two significantly different lines for females (grams K = -1.50 + 2.32 X weight for weight ^ 30 kg, and grams K = 34.90 + 1.11 X weight for weight > 30 kg), with less potassium per kilogram for females weighing more than 30 kg. No sex-related difference is found between 12 and 30 kg. When the regression of total body potassium on height is examined, it is found that a logarithmic transformation of potassium values results in a similar pattern, with no sex-related differences between 100 and 135 cm and less potassium per centimeter in females over this height. For males, log K in grams = 1.761 + 0.0182 X cm of height; and for females, log Kin grams = 1.595 + 0.01942 X cm for height 1 35 cm, and log K in grams = 2.574 + 0.01215 X cm for height > 135 cm. The logarithmic transformation of K versus height is proposed as a standard because it reflects changes in slope associated with known physiologic and endocrinologic changes occurring with puberty and may be more sensitive than weight in predicting abnormal values in individual patients. SpeculationSince the regression of total body potassium on height appears to be a straight line common to both sexes 100-130 cm tall, with a diverging line indicating progressively less potassium per centimeter for females over 135 cm in height, these data were compared with available data for infants. The total body K values of infants between 50 and 80 cm in length appear to fall on a line with a steeper slope than values of children 100 to 135 cm tall. This observation suggests that, during the 1st year of life, increasing total body potassium per centimeter of length reflects maturation of body composition. Further extension of such observations to low birth weight infants might be expected to give information on their body composition. Introductiongrowth and be sensitive to pathologic changes. A semilogarithmic regression on height appears to meet these Interpretation of the clinical significance of total body criteria for total body potassium. potassium determinations depends upon normative Subjects were 232 boys and 230 girls, ages 3-18 years, data and their relations to other measures of body size.They were from a middle socioeconomic background, Presentation of normative data should be in a form in apparent good health, and were free of known acute that will reflect the physiologic changes of normal or chronic disease. They lived in or near Columbia,

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Section: Discussionmentioning

confidence: 60%

Total Body Potassium in Normal Children

et al. 1972

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“…Ethnic variation in body proportions (Martorell et al 1988) and in the range and distribution of body fat has been observed in older, but not in younger, American children (Flynn et al 1970). The distribution of values for several variables was compared with available reference data on UK (white) and Indo-Mediterranean children, using measurements on ('well-off') North Indian and Iraqi children (Eveleth & Tanner, 1976) in the absence of data from Pakistan or Bangladesh.…”

Section: Methodological Problemsmentioning

confidence: 99%

The growth and nutritional status of healthy Asian children aged 4–40 months living in Sheffield

Duggan

Harbottle

1996

Br J Nutr

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Detailed anthropometric measurements were made on 169 healthy children aged between 4 and 40 months during a comprehensive study of the diet and nutritional status of Asian children (of Pakistani and Bangladeshi origin) living in Sheffield. These measurements were used to describe the growth profile of these apparently healthy children and to compare this with both international and UK reference data.The distribution of values for most anthropometric measurements was close to the UK reference data although both boys and girls tended to be slight of build, and girls tended to have relatively smaller head circumferences. Nevertheless, it was concluded that their growth and nutritional status over this age range can be evaluated using standard (UK) growth charts.

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“…Published correlations between total body fat and skinfold thickness vary between 0.4 and 0.9. Pre-school age children demonstrate a relatively poor correlation of only 0.40 (43).…”

Section: Skinfold Thickness/obesitymentioning

confidence: 95%